program doc_so;
var
  so, chuc, donvi: integer;
begin
  write('Nhap vao mot so nguyen duong co 2 chu so: ');
  readln(so);
  if (so < 10) or (so > 99) then
    writeln('So khong hop le')
  else
    begin
      chuc := so div 10;
      donvi := so mod 10;
      case chuc of
        1: 
          case donvi of
            0: writeln('Muoi');
            1: writeln('Muoi mot');
            2: writeln('Muoi hai');
            3: writeln('Muoi ba');
            4: writeln('Muoi bon');
            5: writeln('Muoi lam');
            6: writeln('Muoi sau');
            7: writeln('Muoi bay');
            8: writeln('Muoi tam');
            9: writeln('Muoi chin');
          end;
        2: write('Hai muoi');
        3: write('Ba muoi');
        4: write('Bon muoi');
        5: write('Nam muoi');
        6: write('Sau muoi');
        7: write('Bay muoi');
        8: write('Tam muoi');
        9: write('Chin muoi');
      end;
      if (chuc <> 1) and (donvi > 0) then 
        begin
          write(' ');
          case donvi of
            1: writeln('mot');
            2: writeln('hai');
            3: writeln('ba');
            4: writeln('bon');
            5: writeln('nam');
            6: writeln('sau');
            7: writeln('bay');
            8: writeln('tam');
            9: writeln('chin');
          end;
        end;
    end;
  readln;
end.

program Doc_so;

var

     n: integer;

begin

     write('Nhap mot so nguyen duong to da 2 chu so: ');

     readln(n);

     if n < 10 then

          writeln('So ', n, ' doc la: muoi ', n)

     else if (n >= 10) and (n < 20) then

          writeln('So ', n, ' doc la: muoi ', n mod 10)

     else if (n >= 20) and (n < 100) then

          begin

               case n div 10 of

                    2: write('Hai');

                    3: write('Ba');

                    4: write('Bon');

                    5: write('Nam');

                    6: write('Sau');

                    7: write('Bay');

                    8: write('Tam');

                    9: write('Chin');

               end;

               write(' muoi ');

               case n mod 10 of

                    1: writeln('mot');

                    2: writeln('hai');

                    3: writeln('ba');

                    4: writeln('bon');

                    5: writeln('lam');

                    6: writeln('sau');

                    7: writeln('bay');

                    8: writeln('tam');

                    9: writeln('chin');

               end;

          end

     else

          writeln('Khong nhap dung gia tri so nguyen duong to da 2 chu so.');

end.

câu 1

Program Nguyen_to;

Var n,i:integer;

Function NT(n:integer):Boolean;

Var ok: Boolean;

i: integer;

Begin ok:=true;

for i:=2 to n-1 do if (n mod i)= 0 then ok:=ok and false;

if n < 2 then NT:=false else NT:=ok;

End;

Begin Write('Nhap n: ');

Readln(n); i:=n;

Repeat i:=i+1;

Until NT(i);

Write('So nguyen to nho nhat lon hon ',n, 'la: ',i);

Readln End.

câu 2

uses crt;

const so: set of char=['0','1','2','3','4','5','6','7','8','9'];

var a:array[1..100] of integer;

st,b:string;

c,l,i,n,j:integer;

s, Max: integer;

begin clrscr;

write('Nhap xau:');

readln(st);

l:=length(st);

i:=1;

n:=0;

repeat if (st[i] in so) then begin b:=''

repeat b:=b+st[i];

inc(i);

until (not(st[i] in so)) or (i>l);

inc(n);

val(b,a[n],c);

end;

inc(i);

until i>l;

Max:=a[1];

for i:=2 to n do If Max<A[i] Then Max:=A[i];

Writeln('Phan tu lon nhat cua mang:', Max);

readln;

end.

c1: 

#include <bits/stdc++.h>

using namespace std;

long long i,n,s;

int main()

{

cin>>n;

s=1;

for (i=1; i<=n; i++) s=s*i;

cout<<s;

return 0;

}

Câu 2: 

#include <bits/stdc++.h>

using namespace std;

long long i,n,s;

int main()

{

cin>>n;

s=1;

for (i=1; i<=n; i++) if (i%2==0) s=s*i;

cout<<s;

return 0;

}

a)

uses crt;

VAR

n, d, i: integer;

BEGIN

clrscr;

Writeln ('Nhap vao n='); readln (n);

d : = 1;

For i: = 1 to n do

d: = d*i;

Writeln ('d=',d);

Readln;

END.

c)

uses crt;

VAR

n, i, demuoc: integer;

BEGIN

clrscr;

Writeln ('Nhap vao n='); readln (n);

demuoc: = 0;

For i: = 1 to n do

If n mod i = 0 then

demuoc : = demuoc + 1;

If demuoc = 2 then

Writeln ('n la so nguyen to')

ELSE

Writeln ('n khong phai la so nguyen to');

Readln ;

END.

Còn phần b bạn tự nghĩ nha!

Chúc bạn học tốt!

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1.

program InDaySoTuNhien;
var n, i: integer;
begin
   write('Nhap so nguyen duong n: ');
   readln(n);

   writeln('Day so tu 1 den ', n, ' la:');
   for i := 1 to n do
      write(i, ' ');
end.

2.

program InSoChan;
var
   n, i: integer;
begin
   write('Nhap so nguyen n: ');
   readln(n);

   writeln('Cac so nguyen chan trong khoang tu 1 den ', n, ' la:');
   for i := 1 to n do
   begin
      if i mod 2 = 0 then
         write(i, ' ');
   end;
end.

1.

Program Tim_Max; 
Var A:Array[1..255] of Integer; 
i, n, Max: Integer; 
Begin 
Write('Nhap n: '); Readln(n); 
For i := 1 to n do 
Begin 
Write('Nhap phan tu A[',i,'] = '); Readln(A[i]); 
End; 
Max := A[1]; 
For i := 2 to n do if A[i]>Max then Max := A[i]; 
Write('Phan tu lon nhat la :',Max); 
Readln 
End.

2.

Uses Crt;
Type Mang = ARRAY[1..50] Of Integer;
Var A:Mang;
N,i,j,Tam:Integer;
Begin
{Nhập mảng}
Write('Nhap N='); Readln(N);
For i:=1 To N Do
Begin
Write('A[',i,']='); Readln(A[i]);
End;
{Sắp xếp}
For i:=1 To N-1 Do
For j:=i+1 To N Do
If A[i]>A[j] Then
Begin
Tam:=A[i]; A[i]:=A[j]; A[j]:=Tam;
End;
{In kết quả ra màn hình}
Writeln('Ket qua sau khi sap xep:');
For i:=1 To N Do Write(A[i]:5);
Readln;
End.

3.

Uses Crt;
Type Mang = ARRAY[1..50] Of Integer;
Var A:Mang;
N,i,x:Integer;

Function TimKiem(x, N: Integer; A:Mang):Integer;
Var i:Integer;
Begin
I:=1;
While (I <= N) and (X<>A[I]) do I:=I+1; {{{{tại sao lại phải làm như bước này, tại sao lại lấy i đi so sánh với N}}}}
If I <= N Then Timkiem:=I Else Timkiem:=0;
End;

Begin
{Nhập mảng}
Write(‘Nhap N=’); Readln(N);
For i:=1 To N Do
Begin
Write(‘A[‘,i,’]=’); Readln(A[i]);
End;
Write(‘Nhap X=’); Readln(x);
{Kết quả tìm kiếm}
If TimKiem(X,N,A)<>0 Then 
Writeln(‘Vi tri cua X trong mang la:’, TimKiem(X,N,A))
Else Writeln(‘X khong co trong mang.’);
Readln;
End.

câu 1 tham khảo cái này nhé

Uses Crt;

Type Mang = ARRAY[1..50] Of Integer;

Var A:Mang;

    N,i,Max:Integer;

Begin

    Write('Nhap N='); Readln(N);

    For i:=1 To N Do

        Begin

            Write('A[',i,']='); Readln(A[i]);

        End;

    Max:=A[1];

    For i:=2 To N Do

    If Max<A[i] Then Max:=A[i];

    Writeln('Phan tu lon nhat cua mang:', Max);

    Readln;

End.

program TongSoChan;

var
  n, i, x, tong: integer;

begin
  write('Nhap so nguyen n: ');
  readln(n);
  
  tong := 0;
  
  for i := 1 to n do
  begin
    read(x);
    if x mod 2 = 0 then
      tong := tong + x;
  end;
  
  writeln('Tong cac so chan la: ', tong);
  readln; 
end.

2:

#include <bits/stdc++.h>

using namespace std;

long long n,i;

int main()

{

cin>>n;

for (i=1; i<=n; i++)

if (n%i==0) cout<<i<<" ";

return 0;

}

trên c++

2:

#include <bits/stdc++.h>

using namespace std;

long long a[1000],n,i,dem;

int main()

{

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

dem=0;

for (i=1; i<=n; i++)

if (a[i]%2==0 && a[i]<0) dem++;

cout<<dem;

return 0;

}